Dual-Fuel Switchover Is No Longer a Fixed Number: OEMs Push Application-Specific, Dynamic Logic
As inverter-driven and cold-climate heat pumps hold capacity into single-digit outdoor temperatures, manufacturers say the gas-furnace switchover point in dual-fuel systems must be set per application rather than by a universal rule. Daikin, Midea, Lennox, and Rheem outline how replacement cycles, evolving controls, and local utility economics are reshaping how contractors design and sell these systems.
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